Open Science Grid as XSEDE Service Provider Open Science Grid as XSEDE Service Provider December 4, 2011 Chander Sehgal OSG User Support

December 4, 2011 Overview OSG will provide computational resources as an XSEDE Service Provider - Target Availability is April 1, 2012 Create presence in XSEDE systems by December 15 to allow requests for OSG resources in the next XRAC cycle Understand and develop “bridges” between the OSG and XSEDE – there are some important differences  People and roles  Technology  Operational Methods Establish working interfaces to enable effective environments and support for science users with XSEDE allocations using OSG OSG is working to quickly learn details of the XSEDE environment but this is new territory; so we plan to be conservative in the initial offering 2

December 4, 2011 Introduction to OSG 3 > 30 research communities >100 sites >70,000 cores accessible Users communities (aka VOs) and Campus Grids bring: 1) Users, and/or 2) Resources The resources accessible through the OSG are contributed by the community, organized by the OSG, and governed by the OSG Consortium

December 4, 2011 OSG Ecosystem Consortium Infrastructures Project Satellites Services: Consulting Production Software 4

December 4, 2011 OSG-XSEDE Interface 5 OSG DHTC Fabric OSG Virtual Cluster XSEDE users “login” to the “OSG Virtual Cluster” that provides an abstraction layer to access the distributed OSG fabric. This interface allows XSEDE users to view the OSG as one resource where they submit their jobs, provide the inputs and retrieve the outputs.

December 4, 2011 POPS & Allocations For the quarter starting April 1, 2012, OSG will provide an “initial” allocation Name = Open Science Grid Nickname = OSG Quarterly Allocation = 2,000,000 SUs (1 SU = 1 core hour) Startup Allocation Limit = 100,000 SUs User guide = In-progress; available Dec 15, 2011 (establishing connections to XSEDE documentation contacts) Support contact = We plan to be adapt and evolve this offering as we gain experience with this user community and the types of applications 6

December 4, 2011 Some Contacts OSG StaffResponsibility Miron Livny (Wisconsin)OSG Technical Director and representative at XSEDE SP Forum Dan Fraser (ANL)OSG Production and Campus Grids lead; Alternate on XSEDE SP Forum; Campus Champions liaison Ruth Pordes (Fermilab)OSG Executive Director Rob Quick (Indiana)OSG Operations Lead Chander Sehgal (Fermilab)OSG User Support Lead and Project Manager Mats Rynge (USC-ISI)OSG User Support for XSEDE ; links to other technical support within OSG; helps adapt applications to run on OSG 7 OSG Home Page: Introduction to OSG: General OSG User Documentation:

December 4, 2011 Wrap-up OSG offers a rich Distributed High Throughput Computing (DHTC) environment which supports science computation at broad scales in the compute and data dimensions The “initial” OSG offering to XSEDE is optimized for ease-of-use (and brings some limits in data and storage) As we learn more about how XSEDE users want to use OSG, we can leverage other OSG methods As we identify other use cases, we want to work with that science community to enable their computation on OSG 8